Valve grinder



Feb; 1,1927.

, P. TOMMEI, JR

VALVE @BINDER Filed Dec. 21, 1.925 '2 Sheets-Sheet 1 3( y /Z Z4 W//f y/r f 1 Zd t Z7 ff' um l 'Afb/v' Z5 [E D @n l /6' Z4 Z 1 5 .fr /f .D if HAV I l/ l ,ff ,//4 00 Z6 '49 l /5 i Z l Mmmm ,l

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rain.l avonturier,l Jn., or NEonnsnA, Kansas.

vALvE Gnn'vnnn. l

Application med December 21, 1925i. serial No. 76,849.

This invention relates to improvements in valve'grinders for use 1n connection with '1ntei-nal combustionA engines for imparting bothl a rotary and oscillatory movement to; the operating shaft and valve head engaged 'in order Ithat the valve seatand head may be evenly ground whereby the valvesy will evenly open'and close in order that no esf 'cape in the intake ndr exhaust of the respective motor will take place.

Another object of my invention residing in the specific construction of a'valve grinder per se constituting a housing set to a de sired gearing ratio in order that oscillations the'shaft in order lthat afvalve head and seat may be evenly ground and such rotations allowing the valve grinding compound to feed to the next surface between the seat and valve head'to bezground.

With the above and otherobje'cts in view, the invention further includes the following novel features and details of construction, to be hereinafter\more fully described, illustrated in the accompanying drawings and vminted out in the appended claims.

In the drawing Figure 1 is a top plan view of my'inven-- tion with the housing broken away and il- 50 lustrating the arrangement of the elements so` forming my invention therein.

Figure 2 is a longitudinal sectional view -taken on line 2 2 of Figure 1.] Figure'3 is a sectional view taken on line 3--3 of Figure 1. Figure 4 isa similar view taken on line 4-4 of. Figure 1.

Referring to 4the -drawings in detail, wherein like characters of reference denote correspending parts, the reference character 10 indicates a housing and 11 a cover. plate ,l therefor. ,Extending transversely through an opening 12 providedin the housing 10 1s an exteriorly threaded sleeve 13 having jam nuts 14 threaded thereonupom the opposite sides of th housingY 10' in vorder that the 'said sleeve 3 may he rigidly held at an appropratepoint in its length upon the said housi 10. A worm gear 15 and integrally 5oforme gear 16 are rotatably mounted upon its sleeve 13 behind the innermost of the jam nuts 14 and an. annular iz'ingev 17 formed upon the outer surface ofthe sleeve 13.

An operating-- shaft 18 ,'oui'naledv within,

5h l bearings 19 and 20 arrange ,y within the hous- 10, :includes aV worm,21 upon oneend meshing with the worm gear 15 while its opposite end' includes a pinion 22l meshing with the corresponding pinion 23 provided upon one end of a motor shaft 24 in order that a desired momentum and rotation may "be imparted tothe worm gear 15 and gear 16. Mounted upon a stub shaft 25 positioned within the housing 10 is a relatively large gear 26 meshing with the gear- 16 4and including a relatively small gear 2.7 upon its upper side and formed integral therewith. A relatively large gear 28 rotatably mounted upon the sleeve 13 upon the opposite side of' the annular flange 17 formed thereon and bef tween a washer 29 mesheswith the gear 27.

A' driving shaft 30 is insertedy within the sleeve 13 and 4washer 29 and includes a collar 31 -fixed thereto having a bifurcatedarm 32 extending therefrom while a Vpacking gland 33 is provided upon the'forward end lofv the' 4sleeve 13 around the driving shaft 30 for preventing any lubricant from dripy ping downwardly along the shaft 30 during y .'the operation thereof. Fixed to the lower end of4 a shaft 34 eccentrically journalled upon the gear 28 is a gear 35 meshing with thegear 16 and having a disk 36 secured to its upper side. A pivotedlink 37 is mounted l eccentrically upon the upper side of the disk and associated with the outer end' of 'the bifurcated .arm .32.' A thrust bearing 38 is positioned upon the innermost end of the driving shaft- 30 and engaged by a set screw -39 extending through the cover plate 11 of -the housing 10 in order that any play of the drive shaft may be taken up incident to excessive wear.

In the mode of operation of the present invention it is clearly apparent andv mani# fest that owing to the foregoing description and accompanying drawings of the various gearing ratios. that the relatively large gear 28 may be rotated very slowlyl through the instrumentality of the gear 27 meshing therewith and in order that the gear 35 meshing with the gear 16 may rotate the disk 36 and impart both a 1otary, vbratory and oscillating movement 'to the driving shaft 30 owing to the association of the bifurcated arm 32 to the disk through the instrumentality of the link 37. In other words the drive shaft 30 will vibrate. 184 times per minute while 4the said shaft slowly moves around at the rate of 16 2/3 R. P. M; vThis movement allows the valve grinding compound interposed between the valve seat surfaces is afforded.

-and valve head? to be moved around'to the next surface to be ground in order that a simultaneous operation of feeding the valve grinding compound and the grinding of new It is obviously understood that the outer end of the driving shaft 30 may be so constructed as to receive or have integrally* formed valve he ad engaging tools, 'not shown, in order. that such movement and valve grinding action may presently take place. I

The invention is susceptible of various changes in its form, proportions and minor 1 5 details of construction, and the right is herein reserved to make such changs as prop' erly fall within the scope ofthe appended claims. f-

Having thus described the invention, what is claimed is 1. A valvegrinder of the character" described comprising a housing having an exteriorly threaded sleeve extending therein, a drivinv shaft rotatably mounted within the bore of said sleeve, gearing means rotatably mounted upon the sleeve, gearing reduction means associated with the first mentioned v. gearing means, an operating Ymeans associated with .the first mentioned gearing means and having its speedl controlled by` the caring reduction means, and means operab e by the first mentioned gearing Ameans and associated with the driving shaftV for impartin an oscillatory movement to the driving s aft during the rotation thereof.-

` 2. A valve grinderof the character described comprising a housing 'having an exteriorly threaded sleeve extending therein a driving shaft rotatably mounted within V40 Ithe bore of said sleeve, gearing means rotatably mounted upon the sleeve within the housing, gearing reduction means associated with the irst mentioned gearing means, an

operating means associated with the lirstmentioned gearing means and having its speed dcontrolled by the gearing reduction means, and means operable by the first mentioled gearing means and ao'ciated with the driving shaft for imparting an oscilla-l tory movement to the driving shaft during the rotation thereof, whereby a valve. grindin compound'may be fedv around upon a. va ve seat and head precedentto the vgrinding of new surfaces.

litv 'A 3. A\. valve grinder ofv the-character del (V l scribed comprising a housing having a sleeve extending l therein for rotatably mounting the dr1v1ng shaft within the bore thereof, a

worm gear and rclatively'slnall gear being integrally formed 'and rotatably mounted vupon the sleeve within the housing,- a Worm meshing with .the worm gear and associated with asource of power for imparting the necessary momentum to such gear, a.

relatively' large gear included Within the housing and meshing with the gear upon the Worm gear and having a relatvely small gear provided upon its opposite side, a substan' tially large gear/also included upon the sleeve andmiesliing with the last mentioned gear for'reduced gear ratio thereof, a gear .suspended upon the underside of the sub" stantially large gear andmeshing with the Y gear included upon the Worm gear, and means provided upon-the opposite-side of the substantially large gear and associated .with the suspended gear and the driving shaft for imparting bothga rotary andoscillatoryl movement thereto.

4. A valve grinder of the character described comprising ahousing having a sleeve extending .therein androtatahly mounting a driving shaft Within the bore thereof, a

combined wornrgear and relatively small gear rotatably mounted upon 'the sleeve, a substantially large gear is correspondingly mounted upon the sleeve, a worm meshing with the worm gear froml a source of power for imparting the necessary momentum thereto, a relatively large gear having a relatively. small gear integrallyformed therewith, each of which meshing with the relatively small gear on theworln gear and substantially large gear respectively, a' stub imparted to the driving shaftduring the rol tation thereof.

In testimony whereof I aix my signature. TOMMEI,Y Jn. 

